Competitive Fixed-Bed Adsorption of Pb(II), Cu(II), and Ni(II) from Aqueous Solution Using Chitosan-Coated Bentonite

Table 4

Column adsorption data of ternary metal solution of Pb(II), Cu(II), and Ni(II) at different initial metal concentration with bed height of 2.0 cm and solution flow rate of 0.4 mL/min.

(mg/L)	Metal	(mg/L·hr)	(min)	(min)	(mL)	MTZ (cm)	(mg/g)	(mg/g)
50	Pb(II)	0.03	794.57	2040	816	1.11	11.53	30.74
	Cu(II)	0.03	618.91	2040	816	1.15	10.12
	Ni(II)	0.03	482.58	1860	744	1.36	9.09
150	Pb(II)	0.28	322.94	780	312	1.17	14.31	34.90
	Cu(II)	0.29	325.07	720	288	1.10	10.84
	Ni(II)	0.32	221.06	630	252	1.30	9.75
200	Pb(II)	0.51	268.21	600	240	1.22	13.49	35.92
	Cu(II)	0.53	243.52	570	228	1.34	12.14
	Ni(II)	0.50	172.30	540	216	1.48	10.29